Battery charger



FIG. 1 is a front view of a battery charger showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof; and

FIG. 7 is a sectional view thereof taken along line 7—7 in FIG. 3;

FIG. 8 is a perspective view thereof; and,

FIG. 9 is another perspective view from rear side and bottom in FIG. 7. 

The ornamental design for a battery charger, as shown and described. 